.babelrc

{
  "presets": [
    ["env", {
      "modules": false,
      "targets": {
        "browsers": ["> 1%", "last 2 versions", "not ie <= 8"]
      }
    }],
    "stage-2"
  ],
  "plugins": [
    "transform-vue-jsx",
    "transform-runtime"
  ],
  "env": {
    "test": {
      "presets": [
        "env",
        "stage-2"
      ],
      "plugins": [
        "transform-vue-jsx",
        "transform-es2015-modules-commonjs",
        "dynamic-import-node"
      ]
    },
    "commonjs": {
      "presets": [
        "es2015",
        "stage-2"
      ],
      "plugins": [
        "transform-vue-jsx",
        "transform-es2015-modules-commonjs",
        "dynamic-import-node",
        "transform-runtime"
      ]
    },
    "es": {
      "presets": [
        "es2015-rollup",
        "stage-2"
      ],
      "plugins": [
        "transform-vue-jsx",
        "transform-es2015-modules-commonjs",
        "dynamic-import-node",
        "transform-runtime"
      ]
    }
  }
}